Suck shit to this scumbag.  His name is Gregory McCalium.

His mistake.  Apart from being a thieving, almost certainly drug fucked loser?

He broke into the house of 71 year old Frank Corti, in Oxford, in the UK, armed with a knife.  Mr Corti said he was woken in the middle of the night by noises in his house and was confronted by the knife-wielding McCalium when he went to investigate. McCalium took a swipe at him with his knife, but Mr Corti ducked and threw two big right hooks at him, almost knocking him out.  Mr Corti was then able to make a citizen’s arrest on him, and hand him over to the police.

McCalium’s lawyer told the court his client “looked like a car accident”.  He didn’t get any sympathy from the judge, who sentenced him to 4 1/2 years jail.

His big mistake?  Not knowing his victim was a former boxer in the British army.